This is just a note - I have an old Sunpak DX 8R ring flash that I used for ages with my Pentax SF-1 film camera and 100 mm macro lens. I haven't used it at all since I got my K-3, so tonight, I thought I would give it a whirl. I was expecting to have to use it in manual mode and fiddle around with power levels to get the correct exposure. I tried the TTL mode. To my pleasant surprise, some shots I took at different distances all turned out with pretty much the correct exposure. (I always use the ring flash off-axis, which creates a nicer image as the ring flash becomes the macro equivalent of a softbox when off-axis) I was looking more at the exposure. As I was hand holding both the flash and the camera, I realize that my focus and compositions could be better. This is more or less just to see how the exposure would come out. I need to experiment further with this.

[UncleVanya]

I have that flash and I'm really confused since ttl mode on that Combo shouldn't work. I haven't actually tried mine in atl mode however.